/**
 * 点击波纹效果
 *
 * @param  {[event]} e        [description]
 * @param  {[Object]} arg_opts [description]
 * @return {[bollean]}          [description]
 */
export default function (e, arg_opts) {
    var opts = Object.assign({
        ele: e.target, // 波纹作用元素
        type: 'hit', // hit点击位置扩散center中心点扩展
        bgc: 'rgba(0, 0, 0, 0.15)' // 波纹颜色
    }, arg_opts)
    var target = opts.ele
    if (target) {
        var rect = target.getBoundingClientRect()
        var ripple = target.querySelector('.e-ripple')
        if (!ripple) {
            ripple = document.createElement('span')
            ripple.className = 'e-ripple'
            ripple.style.height = ripple.style.width = Math.max(rect.width, rect.height) + 'px'
            target.appendChild(ripple)
        } else {
            ripple.className = 'e-ripple'
        }
        switch (opts.type) {
            case 'center':
                ripple.style.top = (rect.height / 2 - ripple.offsetHeight / 2) + 'px'
                ripple.style.left = (rect.width / 2 - ripple.offsetWidth / 2) + 'px'
                break
            default:
                ripple.style.top = (e.pageY - rect.top - ripple.offsetHeight / 2 - document.body.scrollTop) + 'px'
                ripple.style.left = (e.pageX - rect.left - ripple.offsetWidth / 2 - document.body.scrollLeft) + 'px'
        }
        ripple.style.backgroundColor = opts.bgc
        ripple.className = 'e-ripple z-active'
        return false
    }
}
